Look closely at a flyover embankment or a drainage line and you will find a working ecosystem of soil, water, plants, animals and people, all depending on one another.
When most of us hear the word ecosystem, we picture a forest, a papyrus swamp or a stretch of savannah. A city does not seem to belong on that list. But a city is built on land and water, and wherever there is soil, plants, rain and living things, there is an ecosystem, whether we pay attention to it or not.
A system, not a backdrop
Take an ordinary roadside embankment. Grass holds the soil in place. The soil takes in rainwater and releases it slowly. A drainage line carries the surplus downhill. Insects live in the grass, birds feed on the insects, and animals, wild and domestic, graze on the growth. People move through, trade, repair vehicles, and depend on the road and everything beside it.
Each part affects the others. That is what makes it a system, and it is why damage in one place rarely stays there.
How small damage becomes big damage
When grass is grazed too hard or trampled, the soil is left bare. The next heavy rain carries that soil into the drainage line. Soil and litter together block the channel. The blocked channel overflows into the road and the surrounding plots, and what it cannot carry ends up in the nearest wetland, which is often already under pressure from filling, farming and dumping.
Wetlands matter far beyond their own boundaries. They store floodwater, filter pollution and shelter fish, birds and plants. In and around Kampala they are among the most valuable, and most threatened, natural features we have.
Protecting a city's ecosystems does not always mean protecting far-away forests. Sometimes it means looking after the slope outside your gate.
Why even small green corridors matter
Birds, pollinators and other small creatures need to move from one place to another to feed and breed. Connected strips of vegetation along roads, rivers and drains give them a route. Cut those strips, or let them degrade into bare soil and rubbish, and the creatures lose the route.
Restoring balance
Restoration does not have to be dramatic or expensive. Replanting exposed slopes with native grasses and trees, protecting natural drainage lines, managing grazing, and keeping waste out of channels are all tasks ordinary communities can take on. Done together, they bring an urban ecosystem back towards balance.
This is the approach CEBCO supports: understand the system, start with the cause, and bring the people who live there into the work.